title: Heterogeneous views on heterogeneity.
authors.forename: Nikolaos A
authors.initials: NA
authors.lastname: Patsopoulos
authors.forename: Evangelos
authors.initials: E
authors.lastname: Evangelou
authors.forename: John P A
authors.initials: JP
authors.lastname: Ioannidis
mesh_terms: D003627:Data Interpretation, Statistical; D006801:Humans; D015201:Meta-Analysis as Topic; D015233:Models, Statistical; D009626:Terminology as Topic